11203233021 has 12 divisors (see below), whose sum is σ = 16184995840. Its totient is φ = 7467645960.

The previous prime is 11203232939. The next prime is 11203233043. The reversal of 11203233021 is 12033230211.

It is not a de Polignac number, because 11203233021 - 2⁷ = 11203232893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11203232985 and 11203233003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203233421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35581 + ... + 153858.

Almost surely, 2^11203233021 is an apocalyptic number.

It is an amenable number.

11203233021 is a deficient number, since it is larger than the sum of its proper divisors (4981762819).

11203233021 is a wasteful number, since it uses less digits than its factorization.

11203233021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196016 (or 196013 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 11203233021 its reverse (12033230211), we get a palindrome (23236463232).

The spelling of 11203233021 in words is "eleven billion, two hundred three million, two hundred thirty-three thousand, twenty-one".